Method of making producer-gas.



W. O. AMSLER.

METHOD OF MAKING PRODUCER GAS.

APPLIGATION FILED FEB. 26, 1908. 979,818. Patented Dec. 27, 1910.

2 SHEETS-SHEET 2 To all whom'tt may-concern:

rrnn s'r *rns PATENT OFFICE.

wALTER'oQ AMsLER, or rr'rrsnune, rnmvsrnvnivrafl jMnrHon-or Maxine erroneous-Gas.

i v Specification of Letters Patent. Patented De 2'7, 1910. Application filed. February 26, 1908. Serial No. 417,835.

-Be it. known that I, WVALTER O. AMsLnR, of Pittsburg,: in the county of Allegheny and State of Pennsylvania, have invented certain new and useful 'Improvementsin Methods'of Making Producer-Gas, of which the following is a specification.

In the accompanying drawings, which illustrate two forms of apparatus for carrying out my improved-method of making producer-gas, Flgnre 1 is a part sectlonal and a part elevational View of apparatusconstructed in accordance with my invention;

Fig. 2 a similar view showing a modified form of apparatus; and Fig. 8, a diagrammatic view' particularly showing the manner of connecting the producers proper and a scrubber.

The prime object of my invention is to provide a new and improved method of making producer-gas from bituminous or tar containing fuels that will be entirely free of tar and all othervolatilehydrocarbons.

The producer-gas made under my process of manufacture will be a highly efficient gas consisting of carbon monoxid, hydrogen and nitrogen free of all volatile hydrocarbons.

In carrying out my method of making producer-gas as above mentioned my invention consists, broadly stated, in first generatingin a gas-producer a gas, then completely oxidizing this gas and afterward recarbonizing it.

The gas generated in the first step of my process will consist of carbon monoxid, carbon dioxid, hydrogen, marsh gas, nitrogen and complex hydrocarbons of the marsh gas series. This producer-gas isobjectionable for some commercial purposes owing to the presence of the tar and other volatile hydrocarbons. In order to eliminate the tar'and other volatile hydroearbons,the gas from the producer is passed to a combustion-chamber or large passage into which air is admitted and in which said gas is oxidized. The re sultant gas will be composed of carbon dioxid, water, and nitrogen. From the combustion or oxidizing-chamber or passage, the

gas is then recarbonized by. causing it to be passed through a highly heated mass of car bonaceo usmaterial. The producer-gas thus made will be entirely free of all volatile and first to the form of; apparatus shown by Fig. 1', which illustrates a suction gas-producer. plant, I employ two gas-producers l and land an intermediate combustion chamber 3. The combustion-chamber or enlarged combustion-passage is disposed betweenthe two producers and is connected with the same by passages 4t and 5. Each of the producers is supported over a pit or trough 6. adapted to contain a quantity of water to form-a water-seal, as is usual in producers of the type illustrated.

The fuel employed in the manufacture of the producer-gas, which, in my method, is bituminous coal or some other comparatively cheap tar containing fuel, is introduced to the respective producers through a charging-opening 7 formed in the top of each produccr. v

In operating the plant illustrated, a small quantity of green bituminous coal is introduced to a producer and rests upon a bed of highly heated carbonaceous material from which all volatile matter has been distilled. This highly heated bed extends upwardly from the ash line 8 to the dotted and waved line 9, which latter indicates the bottom of the layer 'of green coal.. Each of the producers is provided with poke-holes 10.

ll designates a four-way valve in communication with each of the producers by pipes 12 and 13,- with a scrubber 14 (see Fig. 3) and with a pipe 15 open to the atmosphere. By means of the construction just described, air is caused to pass to one producer and the manufactured gas discharged from the other producer. mentioned producer is sucked into the scrubber and from thence drawn into and util- The gas from the lastv that. the air may be introduced to the producers under pressure instead of by suction as in the plant illustrated.

In Fig. 1, I have shown by arrows the course of travel of the air to producer 1, and the course of the gases from said producer through passage 4, combustion-cham,ber 3, passage 5, through the second producer 2 and from thence to the four-way reversing valve 11. Upon a'reversal of the 'said valve 11 the air is first/directed into the producer 2 and the gases therefrom travel through the passage 5, combustion-chamber 3, passage L to producer 1, and from thence to the scrubber by means of the passages shown.

The combustion-chamber 3 is divided into two compartments by a wall 16 and each is passed to the combustion-cham er and as it enters said chamber is met with a sufiicient quantity of air introduced thereto through passage 17 to completely oxidize the gas.

during its travel through the combustionchamber.- This oxidized gas is then recarbonized by being passed down through the fuel contained in producer 2. In the form of Fig. 2, I have showma 'modified form of apparatus. In this form the air introduced to each producer is admitted at the to) and the vgases drawn ofi' at the bottom an passed to the combustionchamber into which air is admitted at the bottomof the chamber.

What I claim is:

1. The method of making gas which consists in generating a producer-gas in a gasproducer, oxidizing the gas in a combustion chamber, recarbonizing the resultant gas by passing it through a second gas-produwr containing a bed of carbonaceous residue, re-

versing the flow of gases, introducing a tarcontaining-fuel "into the second producer,

and then passing the gas generated in the second producer through the combustionducer, oxidizing the gas, recarbonizing the resultant gas by passing it through a second gas-producer contamlng a highly heated bed of carbonaceous residue formed therein from green bituminous material and from which a produceras has been generated, reversing the flow o? gases, introducing a tarcontaining-fuel into the second gas-producer, and then passing the gas generated in the second producer through the combus tion-schamber and through a carbonaceous residue formed in the first producer. In testimony whereof I aflix my signature in presence of two witnesses. J

/ WVALTER O. AMSLER. Witnesses:

W. G'. DOOLIT'ILE, A. C. Var. 

